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Magnetic dipole interactions are significantly weaker than electric dipole interactions by a factor of 1/α^2, where α is the Fine Structure Constant (~1/137^2). Learn more about this fundamental concept in physics.
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NB Magnetic dipole interactions are much weaker than electric dipole interactions by 1/α2 = 1/1372 ~1/2x104 αis called the Fine Structure Constant Harry Kroto 2004